Answer :
ANSWER
[tex]W\text{ = 10.50(1+0.031})^t[/tex]EXPLANATION
The relationship between W and t could be expressed using Exponential Decay or Growth Function
The expression for the equation is:
[tex]\begin{gathered} f(x)\text{ = }ab^x \\ \text{where b = 1 + r} \\ f(x)=a(1+r)^x \end{gathered}[/tex]r is the percent decay or growth rate= 3.1/100 = 0.031
a is the initial value = $10.05
b is the growth factor = 1 + r
x is the time t
substituting the values
[tex]W\text{ = 10.50(1+0.031})^t[/tex]